Convertible drill mechanism.



' PATENTED JUNE 80, 1908 O. ARNOLD.

CONVERTBLE DRILL MEHANISM.

APPLICATION FILED AUGJ?, 1907.

0fl the feed-shaft.

5 'Unrrnn OLIVER ARNOLD, Ol." WORCESTER, MASSACiiliSlTiTS.

CN`V'ERTIBLE @BILL MECHANISJ No. 892,1 i5.

Spesicnton o1" ,Lett ere Potent.

Patented June 30, 1908.

lib all wibo-m it muy concern.'

.llc it known that i, Utivnn frenonn, n. ril i- Zen of the UnitedSteins, residing al. Worrcster, in the county ot Worcester :ind Stato oiira-Ssachnsetts, have .invented n new und 'useful Convertible'iriilMechanism, oi wliirli tire following is n specification, reference bcingmade therein to the neeonipnnying drewrigs.

provide e practise-l, convenient and eli'icient meei'ienisin whereby osimple breast or bund drill may be convertibly employed as :in nprigiitstanding drill with automatic leed; thereby adapting tile mechanism formanyr @losses of work whore n LQmnll drilling merli-- :miem is reqnired.

Another object is to provide e convenient stand end ieedoneeininism withwhich :in ordinary iortofblo drill een be detnclinbly oombined fortemporary use es en upright and trible drill-press.

Another obj eet is to provide Ineznislfor tbe stationary support of itlmnd-driil brore end drill mehanisin, n movable work-sn@porting tableOrbed therefor, sind adjustable Ineens for automatically feeding sindtable or bed toward the drill in conjunction with the operation' of thedi'ill--spindle Another obi'ect is to provide n drilling ma.- ehine orapp ionee .,'ornnrising o piller, or standing freine, n drill-spindlesupported lparallel therewith, n. movable lWork trible, :1.

serew-threeded shaft loeitted between die piller end driifspindle, forfeeding the trible towards 0r from tbe drill. tool, und ineens for oerating said slifdt, es 'more fully hereina. ter explained.. y

' These objects i attain by the mechanism ilinstrnted in tbeaccompanying drawings, wherein Figure 1 represents o Side elevation ofa. mechanism embodying in v invention. Fig. 2 is e, plan viewSl'n'nvi'rg tile feed. operating devices; the inoingcefr being inSection, ond the brace-freine ont ori et line. "di on i. Fig. 3 is e.pli i. view oi the Worf. importing tabie wit-ii the post or uprightnilio t' sind feed'- sliet shown in section et lino X K on Fig. 1. Fig.4 is e. horizontal section et line Y' Y on Fig. li Fig. y5 is a. diagramview showing the feed-operating eem sind rocker-erm :remitted thereby;and Fig. 6 is a side rview diagram `illustrating the manner ofdisengaging the feed pewl for permitting reverse movement The objeet ofmy present invention is to A represente f portnble bruid-drill orbreastdrill inerfini stock, or l'rnnio fil, with its broom-'pod IIL; thedrill-spindle rote table in suitable benringbin seid liinme g ibSpindie-driving geur` (1,41; and tbe main op( "ng geni' Ji, tbelnttcrbeing disposed with its axis perpendicular' to the spindie exis,and lievi g :in operating ineens or lmnd-'errnxk i combined. therewith.Seid moin ge;\.r provided with beveled gennteeth tlnit mesli with tbespinrlle-rl1'ivir1g genre so tlmt rotation ol'l the drill-spindle iseffected by ytru'ning tbe crank ond Innin geur, in Well known nntnner.-ln tbe present illustration tbc marin geur is shown. with two serien ofgen1' teeth, aej'nnd s, sind tivo driving genre d and r'l nre :wrongedon the drill-spindle 4for iinlinrling tlirreto diiierent speeds,suitable clntcl. devices being provided, nt 5, for non nerting eitlirrone oi' Said (Z or (Z1 to drive tbe drill-spindle- This dual form ofgei'n'ing, however, in not n lieetnro of iny presenr. invenlion; rindany other snitirble style ol breast-drill, or gearing, een be employed:1s on equivalent element in my claimed coinbinntions, if preferred. f

C indicates the drilLholding chuck, and 6 the drilling tool boldtherein.

The port marked B represents the Stond or supporting opplifinrecomprising an upright post, piller or eolnmn l0, and o lieed-frnmelmving an 'upper forwardly projecting arm or member 7, :l1-nd n lowerprojecting erm or member H; sind arms nrolerebly united by on integrallyformed bar, or bers, es indicated :rt l. ,tecbod ,to ille upright post,piller or column i0; which loller is preferably .mudo oll :L eylindricnlrod, either solid or tubulin', and is provided with n snitoblo foot orbose niember 32 iixed thereon, :nid provided with screw-bolos orfoeilitiee for its :ittnelnnent to e. bench or platform.

'libe upper member 7 i'iLted, :it or near ont end, with a. sent 1 3 forreceiving the iin drill-brnoe 'lrxnno A1; ond :i bolt 1,4, or othersuitable fastening device is provided for detoclinblv but firmlyysecnrnlg the drill-brace lower member H is nlsoitted with L sont 15Seid bond-ironie is rigidly et-.

ronrnrifiing lie brace, drilly ffl) ie p i st l() sind mounted te tur ibearings 'formed in or upon the lieedeireme arms '7 and -c i2; seidsim'ft being screwtlireileil along ts lower portion which en- 'itli e.counter-i, tliresd formed iii tile iiul) oi the teble. Bv rotetien eithe screw-shaft the table is moved up oi' flown accordingly the sliefftis turned. This Yifeed-screw slm best liet-Ween tee post mend drillspindle 2, so that the l^ .ers e ol the perte under tlie force exerted'ii "eositieii tcitlie i et Werk. Vixfl on tlie top end `f-.itlisuitellile il@ LC* mili-pin lispleccmeiiq und "lig tlie iced devices ecam 3l) is the nie-in gear 3, e rocker Slis "f bearings upm; the lice-dframe ving one end en erin or foil 33 that id mi erm pivo e L d toengage A spring .29 previded 'for pressi; i eci: the iecler or ik; im,to keep the roll normellj,vv egeiiist the lli-ee tile cam. The end ofthe pevvl tliet eng ,Y s the retcliet is formed with suitelilcprojections or means that keep it norllv ie Alement with tlieper"plieryv of the mit permit of its reic-ies so'tliet it f, shown iiito be given lie creci; 26p A ewl against f' metio-li 2H l, incluis of tpiovided -Wlicel; si ,g is arranged to ed down v tli tee pewl, and torelative tliLreto when tlie letter i to and out ci i' Fing position.

'The eem SO, shown, isi -rmed es en elio- 'eei enrichis, and etteeliedto tlie iiiiiei si( e el the umili gear 3. iifl cem may be mede ivitii t'.i iiiore projections or eliiieli-v impulses to escli revolution lieiced. more oi' 'firm LieiL 'tli opecetion, 'the 'tafels 20 is edjiistedsiied ievci by turning the ieedelieit d s the henri-creek 26. lie j isplaced unes beneath tl'ie diil 6. "mi oeeietoi tlieii, by ineens oi thelimiti creek rotetes the gear 3 Whicli operates mechanism; the drillbeing rotated-by either of tile sets oi: gem-sf, or s, 1. llie cem 3@actu-etes the rocker pliwl causing en intermittent rotative movement oithe ieed-screwslisit 23, which slowly elcvetes the table 2U, thereby'Afeel'ling the Worli onto the drilling' tool. sstlie drillingprogresses. When the hole is completed the pswl 35 is thrown off (as inFig. 6) and/e reverse movement is given to the screwsliait, bytlieAcisiil; 25, Jor depressi-iig the trible and releasing tlie drill.

B v releasing' the fastening devices, et and i6, the, drill-ler ee clinlie readily dctzielied freni the ste-iid supporting appliance, so lis to,be employed upon anyv-.fork es e bicestedrill when: desired. @r again,it may be secured to the stand or supporting appliance and thereemployed es su aiutoiiieticellj; ieediug upright drilling meclieii ism.

B this invention l Drevidc e verT serl 1 viceeble, convenient endeiiicieiit drill-press 'or appliance 'that Well adapted to go in etrevcling lait, er in mitoiiiobiles; well is 'for use iii msiv othersituations and in various lsreiiclies of tiie mechanic tredes, for(loing moderately smell drilling` work. it drills fest, mid it drillsstraight; and is readily convertible ior :i variety of uses, es abovedescribed.

i claim* i. ji drill-supporting stand comprising an upright memberhaving' e projecting heed portion and e suitable standing foot, :mdprovided. 'with a, work-supporting device that is movable up end downbetween the feet end heed ci the stand, en' automatic feedmeclieiiismfor moving seid Work-supporting device to 'feed the Work to the drill,Mid dem vices ici' tlie detachable ,connection oic e portabledrill-brace rigidly to seid stand iii combination with e portebledrill.mechanism coliiprisiiig the drill-brace, drill-spindie, drill- ;holdiigchuck, and gearing for opei'etiiig 'the .Y drill-spindle, and ineenscarried by seid geering for meting the automatic feed-mech einem.t v

2. in. mechanism of the class eesciilvegi, l

including' s portable cirlbbrece provided with diill-opeietiiig devises,s stand therefor,

provided with e Worx-supporting eidvi'eed ing mechanism mou' 'ted onseid stand, and means for detachee-bly securing said drilloreee to seidsteed; tilev combinaties of e ieedeetuetieg merel-oei? ceiried en stand,

and'

drill-brace, said member being respectively positioned for unattachedcoacting engagement Witheach other when the drill-brace and stand areunited and readily separable by removal of said drill-brace from thestand.

3. A drill-supporting attachment comprising an upright post having .abase or foot member, ak work-sup orting table slidable upon said post, ahear -frarne 'fixed upon said post 'and provided with upper and` lowerearing seats for the support of a drill-brace with its drill-operatingmechanism, means for detachably'securing said drill-brace to saidhead-frame, a feed-shaft mounted in bearings on said foot andhead-frame, and threaded into the table-supporting arm, a ratchet-wheelVixed on said feed-shaft, a drill-operating gear having a cam thereon, afeed-pawl engaging said ratchet wheel, and means for actuating said pawlfrom the cam on the`drill-o eratinggear.

4. In mec ianism of the character described, the combination with theupright post, lthe drill-carrying frame, the drillspindle,drill-operating gearing, and a work table mounted to slide on said ostand projecting .beneath the drill-spind e of a feedshalt disposedapproximately in the same plane wit 1 and positioned between said postand the drill-spindle, said feed-shaft -being threaded .for moving saidtable to feed the work to the drilling tool, and means for rotativelyactuating said feed-shalt automatically by the same primal operatingmeans and in conjunction with the operation of the drill-s indle.

5. n a mechanism of the character speciiled, the combination, with asupporting stand having upper and lower arms vitted with seals `l'orsustaining a breast or hand drill-mcelranism, and means for detachablysecuring thc same to said seats, a work-feeding table having abearing-hub inovably supported on the stand beneath said arms;

of a threaded.` feed-shaft mounted in said stand and connected formoving said table, a ratchet wheel on the feed-shaft, a pawldevice forInoving said ratchel.-\vheel, a 4rocker comprising a pawl-oarrying armto which the pawl is ivoted, and an actuatingarm rovided wit 1aloam-engaging roll or mem ier, the drill-1ncchanism, its operatinggearing, and a cam vlixcd to thc primary drill-operating gear andengagcable with said actuating-arm i'or oscillating the rocker.

6. In a drilling mechanism, the combination of the upright standardhaving a standing foot and forwardly n'ojccting headframe, adrill-spindle, drill-holding chuck, and spindle-actuating gearingrotativcly supported in connection with said head-frame, axiallyparallel with said standard, a drilloperating gear provided with a camAlixcd thereon, said cam having a plurality o'lprotuberances, awork-supporting table slidably mounted to move up and down saidstandard, an upright feed-shalt threaded l'or moving said table, andmeans actuated b v said cam 'for imparting rotative movement toV saidl"eed-sl1a.t, in conjunction with the operation of the drill-spindle.

7. ln a mechanism of the character dcscribed, in combination with thel'ced ratchetwheel, and the vibrating pawl-carrying arm; ol' a pawlpivotally attached to said arm for sidewise disengagement, and havinglmeans `f or its normal retention in alinement with the ratchet-wheelface, and a pawl rossing spring arranged to swing with said -pawlwhilemaintaining its normal position in relation to the pawl member.

W'itness my hand this 12th day ol August, 1907.

omvnn Annone.

Witnesses:

(Inns. ll. Bunmncn, A. G. Davis.

